"Every IPTV operator is going slower than originally anticipated," says Arjang Zadeh, managing partner with Accenture, a systems integrator and consultancy. "Achieving end-to-end quality of service is a difficult thing to do." Gary Schultz, president and principal analyst with MRG: "If you talk to both small and large operators you find a consistent level of surprise among them about how hard it is to get video right." Article